Markes International Ltd.


Special Issues

LCGC SupplementsSpecial Issues-12-01-2012
Volume 30
Issue 12

Markes International Ltd.

Company Description

Founded in 1997, Markes International is the world's leading supplier of thermal desorption (TD) instrumentation and related sampling accessories for monitoring toxic and odorous chemicals in air, gas, and materials.

Chief Chromatographic Techniques Supported

  • Thermal desorption (TD) as a sample concentration and introduction technique for all leading-brand GC and GC–MS

  • Headspace (HS)-TD-GC(MS)

  • GC–MS data reprocessing software

  • TOF-MS

Markets Served

Markes serves fast growing markets from environmental health and safety to materials testing and from food, flavor, and fragrance to defense and forensic. Markes' global customer base includes: major industry, government agencies, academia, and the service laboratory sector.

Major Products/Services

Markes International has introduced several highly successful brands of TD instruments to the market, including:

  • UNITY series: a universal platform for sorbent tubes and whole air and gas samples (canisters, bags, and online air and gas streams)

  • TD-100: a fully automated TD system for sorbent tubes

  • The 100-tube ULTRA series of TD autosamplers, including automated sample recollection (a patented method of overcoming the "one-shot" limitation of many other TD instruments)

  • CIA Advantage systems for automated cryogen-free analysis of air and gas sampled using canisters (for US EPA Method TO-15, etc.)

  • The Micro-Chamber/Thermal Extractor for materials testing (especially useful for fast emissions screening)

  • TT24-7 for continuous online monitoring (chemical warfare agent analysis and other applications requiring near-real-time air monitoring)

  • HS5-TD for coupling headspace analysis with TD for greatly enhanced sensitivity.

Markes also supplies a wide range of sampling accessories and consumables, including TubeTAG electronic labels for tracking sorbent tubes from field to lab and within a lab.

From ALMSCO International, a division of Markes International:

  • BenchTOF-dx: a high-definition TOF-MS

  • ClearView: a GC–MS software package for enhancing identification of trace analytes

  • TargetView: target compound detection software for GC–MS.


Markes' factory, R&D center, and headquarters facility is located in the UK. In 2011, Markes expanded this and its US operation (Markes International, Inc.), adding extra laboratory and demonstration facilities.

Markes also supports a global distributor network. The company has a division (ALMSCO International) for the development of time-of-flight mass spectrometers (BenchTOF-dx) and associated software for GC–MS.

Markes International Inc.

11126-D Kenwood Road

Cincinnati, OH 45242


(866) 483-5684


(513) 745-0741

Markes International Ltd.

Gwaun Elai Medi Science

Campus, Llantrisant, RCT,

CF72 8XL, UK


44 (0)1443 230 935


44 (0)1443 231 531